How to make a full-screen app Xiaomi: the full guide

Owning a modern Xiaomi or Redmi smartphone is often accompanied by a desire to get the maximum immersion in content, whether it is games, videos or reading news. However, users often face a situation where the installed application does not stretch over the entire area of the display, leaving black bars on the top or bottom, this is especially true for older programs or games that were not optimized for modern elongated screens with cutouts.

The interface display problem can significantly reduce the comfort of using a gadget, especially if you are used to frameless design. The MIUI shell and the new HyperOS provide powerful tools for forced change of display mode. System algorithms allow you to adapt even incompatible programs to the current standards of large-format matrices.

In this article, we will take a look at how to make a full-screen Xiaomi app, eliminating annoying interface artifacts. We will look at the standard settings, hidden developer menus and specific features for working with the camera notch. You will learn how to control the behavior of each specific program, providing yourself with the perfect visual experience.

Causes of black stripes and incorrect display

The main reason for the appearance of empty areas at the edges of the screen is the discrepancy between the aspect ratio of the application and the physical resolution of the matrix of your smartphone. Modern flagships and budget Xiaomi often use 20:9 or even 21:9 formats, while many applications are still created with the expectation of the classic 16:9. The system automatically scales the image to preserve the proportions, which leads to the emergence of “letterboxing” – black fields.

Software optimization is another factor: software developers don’t always test their products on all existing Android devices. If the application manifest is rigidly defined as the maximum resolution or specific aspect ratio, the Android operating system is forced to run it in a compatible mode, ignoring the extra pixels.

⚠️ Warning: Forced UI stretching can cause controls (buttons, menus) to be outside the visible area or to be blocked by a front camera.

Also, consider the camera cutout at the top of the screen, and some apps, by default, hide the top status bar zone so that the camera doesn't override important content, which visually reduces usable area, and understanding these mechanisms is essential for proper calibration of the display.

• 📱 Discrepancy between screen resolution and application requirements.
• 📉 Lack of optimization by the software developer.
• 🎥 Blocking the camera cutout zone with system settings.

Basic configuration through the application menu

The easiest and safest way to scale is to use the built-in shell functionality. Depending on the version of MIUI or HyperOS, the path to settings may vary slightly, but the logic remains the same. You need to go to the general system settings, where the behavior of all installed programs is controlled.

Find the partition that controls the applications, and go to the look and feel of the apps, and here you'll see a list of all the programs that are installed, and the system itself flags those that don't support the full screen by default, suggesting that you fix this manually, so you can flexibly configure each game or utility separately without affecting the entire system.

Once the appropriate switch is turned on, the changes take effect instantly. However, some heavy games may require a full reboot to apply new rendering options. If the standard path has failed, it is worth checking whether the power saving mode is included, which sometimes limits the performance of the GPU and changes the behavior of the screen.

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If the navigation buttons are missing after turning on the full screen, try switching to gesture control in the screen settings.

Use of extended display settings

In newer firmware versions, Xiaomi engineers have put camera cutout control in a separate menu, which not only hides the black strip around the lens, but also forces the aspect ratio of the selected programs to be changed, a feature that is especially useful for video players and browsers, where every millimeter of space is important.

To access these settings, you need to go to the display settings menu. This is a section often called "Netline Control" or "Tune in the Cutout Area." Inside, you'll find a list of applications that can change the behavior of the top of the screen. Choosing "Enlarge" or "Full Screen" mode causes the system to ignore the technical notch and use the entire matrix area.

It's important to understand that activating the "Increased" mode for social media can cause time and notification icons to overlap the image. It's a trade-off between aesthetics and functionality. Experiment with settings for each individually app to find a balance.

Settings for developers: deep calibration

If standard methods fail, Android’s hidden capabilities come to the rescue. The developer menu contains settings that directly affect how the operating system tells applications about the space available, an advanced level of customization that requires caution.

To activate this menu, you need to quickly click seven times on the build number in the About section. Once you have become a developer, a new item will appear in the main settings menu, and we are interested in the section related to scaling and compatibility.

Find Scale to full screen, where you can choose forced stretching for all applications or just those on the list, and the aspect ratio option, which allows you to emulate different screen formats, can also be useful, changing these settings may require you to reboot the device.

Beware: a global change in the parameters in the developer menu can lead to unstable operation of the launcher interface, it is recommended to change the values one by one and check the result. If the system begins to behave incorrectly, you can always reset the developer's settings to factory values.

Solving problems with specific applications

Some categories of software require a personalized approach, for example, video players often have their own cropping settings that are prioritized over the system, in which case you need to look for the option "Fit to screen" or "Zoom" inside the application itself. Internal software settings often override system commands.

Games, especially old or ported from other platforms, may not work properly with high resolutions, and sometimes it is more effective for them to run the game in window mode or use special gaming utilities from Xiaomi (Game Turbo), which have their own layer of image optimization, which allows you to bypass the limitations imposed by the game itself.

⚠️ Note: Using third-party apps to change screen resolution may require root rights and result in denial of warranty service.

If none of these methods work, it's possible that the application is hardcoded to a specific resolution, in which case the only way out is to wait for an update from the developer or to look for a modified version of the program that supports modern screens.

• 🎮 Use Game Turbo to optimize your games.
• 📺 Check the internal scaling settings in players.
• 🔄 Update your apps to the latest versions via the Store.

Frequently Asked Questions (FAQ)

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Flexible display setting allows you to adapt any software to modern frameless screens Xiaomi, eliminating black stripes and increasing the comfort of use.